DrvACPI.cpp@ 15682

Last change on this file since 15682 was 14710, checked in by vboxsync, 16 years ago
Devices-OSX: added ACPI power reporting (#3342)
Property svn:eol-style set to `native` Property svn:keywords set to `Id`
File size: 24.5 KB

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1	/* $Id: DrvACPI.cpp 14710 2008-11-27 15:13:46Z vboxsync $ */
2	/** @file
3	* DrvACPI - ACPI Host Driver.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18	* Clara, CA 95054 USA or visit http://www.sun.com if you need
19	* additional information or have any questions.
20	*/
21
22	/*******************************************************************************
23	* Header Files *
24	*******************************************************************************/
25	#define LOG_GROUP LOG_GROUP_DRV_ACPI
26
27	#ifdef RT_OS_WINDOWS
28	# include <windows.h>
29	#endif
30
31	#include <VBox/pdmdrv.h>
32	#include <VBox/log.h>
33	#include <iprt/assert.h>
34	#include <iprt/string.h>
35
36	#ifdef RT_OS_LINUX
37	# include <iprt/string.h>
38	# include <sys/types.h>
39	# include <dirent.h>
40	# include <stdio.h>
41	#endif
42
43	#ifdef RT_OS_DARWIN
44	# include <Carbon/Carbon.h>
45	# include <IOKit/ps/IOPowerSources.h>
46	# include <IOKit/ps/IOPSKeys.h>
47	#endif
48
49	#include "Builtins.h"
50
51
52	/*******************************************************************************
53	* Structures and Typedefs *
54	*******************************************************************************/
55	/**
56	* ACPI driver instance data.
57	*/
58	typedef struct DRVACPI
59	{
60	/** The ACPI interface. */
61	PDMIACPICONNECTOR IACPIConnector;
62	/** The ACPI port interface. */
63	PPDMIACPIPORT pPort;
64	/** Pointer to the driver instance. */
65	PPDMDRVINS pDrvIns;
66	} DRVACPI, *PDRVACPI;
67
68
69	/**
70	* Queries an interface to the driver.
71	*
72	* @returns Pointer to interface.
73	* @returns NULL if the interface was not supported by the driver.
74	* @param pInterface Pointer to this interface structure.
75	* @param enmInterface The requested interface identification.
76	* @thread Any thread.
77	*/
78	static DECLCALLBACK(void *) drvACPIQueryInterface(PPDMIBASE pInterface, PDMINTERFACE enmInterface)
79	{
80	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
81	PDRVACPI pThis = PDMINS_2_DATA(pDrvIns, PDRVACPI);
82	switch (enmInterface)
83	{
84	case PDMINTERFACE_BASE:
85	return &pDrvIns->IBase;
86	case PDMINTERFACE_ACPI_CONNECTOR:
87	return &pThis->IACPIConnector;
88	default:
89	return NULL;
90	}
91	}
92
93	/**
94	* Get the current power source of the host system.
95	*
96	* @returns status code
97	* @param pInterface Pointer to the interface structure containing the called function pointer.
98	* @param pPowerSource Pointer to the power source result variable.
99	*/
100	static DECLCALLBACK(int) drvACPIQueryPowerSource(PPDMIACPICONNECTOR pInterface,
101	PDMACPIPOWERSOURCE *pPowerSource)
102	{
103	#if defined(RT_OS_WINDOWS)
104	SYSTEM_POWER_STATUS powerStatus;
105	if (GetSystemPowerStatus(&powerStatus))
106	{
107	/* running on battery? */
108	if ( (powerStatus.ACLineStatus == 0)
109	\|\| (powerStatus.ACLineStatus == 255)
110	&& (powerStatus.BatteryFlag & 15))
111	{
112	*pPowerSource = PDM_ACPI_POWER_SOURCE_BATTERY;
113	}
114	/* running on AC link? */
115	else if (powerStatus.ACLineStatus == 1)
116	{
117	*pPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET;
118	}
119	else
120	/* what the hell we're running on? */
121	{
122	*pPowerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN;
123	}
124	}
125	else
126	{
127	AssertMsgFailed(("Could not determine system power status, error: 0x%x\n",
128	GetLastError()));
129	*pPowerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN;
130	}
131	#elif defined (RT_OS_LINUX) /* !RT_OS_WINDOWS */
132	DIR *dfd;
133	struct dirent *dp;
134	FILE *statusFile = NULL;
135	char buff[NAME_MAX+50];
136
137	/* start with no result */
138	*pPowerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN;
139
140	dfd = opendir("/proc/acpi/ac_adapter/");
141	if (dfd)
142	{
143	for (;;)
144	{
145	dp = readdir(dfd);
146	if (dp == 0)
147	break;
148	if (strcmp(dp->d_name, ".") == 0 \|\|
149	strcmp(dp->d_name, "..") == 0)
150	continue;
151	strcpy(buff, "/proc/acpi/ac_adapter/");
152	strcat(buff, dp->d_name);
153	strcat(buff, "/status");
154	statusFile = fopen(buff, "r");
155	/* there's another possible name for this file */
156	if (!statusFile)
157	{
158	strcpy(buff, "/proc/acpi/ac_adapter/");
159	strcat(buff, dp->d_name);
160	strcat(buff, "/state");
161	statusFile = fopen(buff, "r");
162	}
163	if (statusFile)
164	break;
165	}
166	closedir(dfd);
167	}
168
169	if (statusFile)
170	{
171	for (;;)
172	{
173	char buff2[1024];
174	if (fgets(buff2, sizeof(buff), statusFile) == NULL)
175	break;
176	if (strstr(buff2, "Status:") != NULL \|\|
177	strstr(buff2, "state:") != NULL)
178	{
179	if (strstr(buff2, "on-line") != NULL)
180	*pPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET;
181	else
182	*pPowerSource = PDM_ACPI_POWER_SOURCE_BATTERY;
183	}
184	}
185	fclose(statusFile);
186	}
187	#elif defined (RT_OS_DARWIN) /* !RT_OS_LINUX */
188	*pPowerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN;
189
190	CFTypeRef pBlob = IOPSCopyPowerSourcesInfo();
191	CFArrayRef pSources = IOPSCopyPowerSourcesList(pBlob);
192
193	CFDictionaryRef pSource = NULL;
194	const void *psValue;
195	bool result;
196
197	if (CFArrayGetCount(pSources) > 0)
198	{
199	for(int i = 0; i < CFArrayGetCount(pSources); ++i)
200	{
201	pSource = IOPSGetPowerSourceDescription(pBlob, CFArrayGetValueAtIndex(pSources, i));
202	/* If the source is empty skip over to the next one. */
203	if(!pSource)
204	continue;
205	/* Skip all power sources which are currently not present like a
206	* second battery. */
207	if (CFDictionaryGetValue(pSource, CFSTR(kIOPSIsPresentKey)) == kCFBooleanFalse)
208	continue;
209	/* Only internal power types are of interest. */
210	result = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSTransportTypeKey), &psValue);
211	if (result &&
212	CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSInternalType), 0) == kCFCompareEqualTo)
213	{
214	/* Check which power source we are connect on. */
215	result = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSPowerSourceStateKey), &psValue);
216	if (result &&
217	CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSACPowerValue), 0) == kCFCompareEqualTo)
218	*pPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET;
219	else if (result &&
220	CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSBatteryPowerValue), 0) == kCFCompareEqualTo)
221	*pPowerSource = PDM_ACPI_POWER_SOURCE_BATTERY;
222	}
223	}
224	}
225	CFRelease(pBlob);
226	CFRelease(pSources);
227	#else /* !RT_OS_DARWIN either - what could this be? */
228	*pPowerSource = PDM_ACPI_POWER_SOURCE_OUTLET;
229	#endif /* !RT_OS_WINDOWS */
230	return VINF_SUCCESS;
231	}
232
233	/**
234	* @copydoc PDMIACPICONNECTOR::pfnQueryBatteryStatus
235	*/
236	static DECLCALLBACK(int) drvACPIQueryBatteryStatus(PPDMIACPICONNECTOR pInterface, bool *pfPresent,
237	PPDMACPIBATCAPACITY penmRemainingCapacity,
238	PPDMACPIBATSTATE penmBatteryState,
239	uint32_t *pu32PresentRate)
240	{
241	/* default return values for all architectures */
242	pfPresent = false; / no battery present */
243	*penmBatteryState = PDM_ACPI_BAT_STATE_CHARGED;
244	*penmRemainingCapacity = PDM_ACPI_BAT_CAPACITY_UNKNOWN;
245	pu32PresentRate = ~0; / present rate is unknown */
246
247	#if defined(RT_OS_WINDOWS)
248	SYSTEM_POWER_STATUS powerStatus;
249	if (GetSystemPowerStatus(&powerStatus))
250	{
251	/* 128 means no battery present */
252	*pfPresent = !(powerStatus.BatteryFlag & 128);
253	/* just forward the value directly */
254	*penmRemainingCapacity = (PDMACPIBATCAPACITY)powerStatus.BatteryLifePercent;
255	/* we assume that we are discharging the battery if we are not on-line and
256	* not charge the battery */
257	uint32_t uBs = PDM_ACPI_BAT_STATE_CHARGED;
258	if (powerStatus.BatteryFlag & 8)
259	uBs = PDM_ACPI_BAT_STATE_CHARGING;
260	else if (powerStatus.ACLineStatus == 0 \|\| powerStatus.ACLineStatus == 255)
261	uBs = PDM_ACPI_BAT_STATE_DISCHARGING;
262	if (powerStatus.BatteryFlag & 4)
263	uBs \|= PDM_ACPI_BAT_STATE_CRITICAL;
264	*penmBatteryState = (PDMACPIBATSTATE)uBs;
265	/* on Windows it is difficult to request the present charging/discharging rate */
266	}
267	else
268	{
269	AssertMsgFailed(("Could not determine system power status, error: 0x%x\n",
270	GetLastError()));
271	}
272	#elif defined(RT_OS_LINUX)
273	DIR *dfd;
274	struct dirent *dp;
275	FILE *statusFile = NULL;
276	FILE *infoFile = NULL;
277	char buff[NAME_MAX+50];
278	/* the summed up maximum capacity */
279	int maxCapacityTotal = ~0;
280	/* the summed up total capacity */
281	int currentCapacityTotal = ~0;
282	int presentRate = 0;
283	int presentRateTotal = 0;
284	bool fBatteryPresent = false, fCharging=false, fDischarging=false, fCritical=false;
285
286	dfd = opendir("/proc/acpi/battery/");
287	if (dfd)
288	{
289	for (;;)
290	{
291	dp = readdir(dfd);
292	if (dp == 0)
293	break;
294	if (strcmp(dp->d_name, ".") == 0 \|\|
295	strcmp(dp->d_name, "..") == 0)
296	continue;
297	strcpy(buff, "/proc/acpi/battery/");
298	strcat(buff, dp->d_name);
299	strcat(buff, "/status");
300	statusFile = fopen(buff, "r");
301	/* there is a 2nd variant of that file */
302	if (!statusFile)
303	{
304	strcpy(buff, "/proc/acpi/battery/");
305	strcat(buff, dp->d_name);
306	strcat(buff, "/state");
307	statusFile = fopen(buff, "r");
308	}
309	strcpy(buff, "/proc/acpi/battery/");
310	strcat(buff, dp->d_name);
311	strcat(buff, "/info");
312	infoFile = fopen(buff, "r");
313	/* we need both files */
314	if (!statusFile \|\| !infoFile)
315	{
316	if (statusFile)
317	fclose(statusFile);
318	if (infoFile)
319	fclose(infoFile);
320	break;
321	}
322
323	/* get 'present' status from the info file */
324	for (;;)
325	{
326	char buff2[1024];
327	if (fgets(buff2, sizeof(buff), infoFile) == NULL)
328	break;
329
330	if (strstr(buff2, "present:") != NULL)
331	{
332	if (strstr(buff2, "yes") != NULL)
333	fBatteryPresent = true;
334	}
335	}
336
337	/* move file pointer back to start of file */
338	fseek(infoFile, 0, SEEK_SET);
339
340	if (fBatteryPresent)
341	{
342	/* get the maximum capacity from the info file */
343	for (;;)
344	{
345	char buff2[1024];
346	int maxCapacity = ~0;
347	if (fgets(buff2, sizeof(buff), infoFile) == NULL)
348	break;
349	if (strstr(buff2, "last full capacity:") != NULL)
350	{
351	if (sscanf(buff2 + 19, "%d", &maxCapacity) <= 0)
352	maxCapacity = ~0;
353
354	/* did we get a valid capacity and it's the first value we got? */
355	if (maxCapacityTotal < 0 && maxCapacity > 0)
356	{
357	/* take this as the maximum capacity */
358	maxCapacityTotal = maxCapacity;
359	}
360	else
361	{
362	/* sum up the maximum capacity */
363	if (maxCapacityTotal > 0 && maxCapacity > 0)
364	maxCapacityTotal += maxCapacity;
365	}
366	/* we got all we need */
367	break;
368	}
369	}
370
371	/* get the current capacity/state from the status file */
372	bool gotRemainingCapacity=false, gotBatteryState=false,
373	gotCapacityState=false, gotPresentRate=false;
374	while (!gotRemainingCapacity \|\| !gotBatteryState \|\|
375	!gotCapacityState \|\| !gotPresentRate)
376	{
377	char buff2[1024];
378	int currentCapacity = ~0;
379	if (fgets(buff2, sizeof(buff), statusFile) == NULL)
380	break;
381	if (strstr(buff2, "remaining capacity:") != NULL)
382	{
383	if (sscanf(buff2 + 19, "%d", &currentCapacity) <= 0)
384	currentCapacity = ~0;
385
386	/* is this the first valid value we see? If so, take it! */
387	if (currentCapacityTotal < 0 && currentCapacity >= 0)
388	{
389	currentCapacityTotal = currentCapacity;
390	}
391	else
392	{
393	/* just sum up the current value */
394	if (currentCapacityTotal > 0 && currentCapacity > 0)
395	currentCapacityTotal += currentCapacity;
396	}
397	gotRemainingCapacity = true;
398	}
399	if (strstr(buff2, "charging state:") != NULL)
400	{
401	if (strstr(buff2 + 15, "discharging") != NULL)
402	fDischarging = true;
403	else if (strstr(buff2 + 15, "charging") != NULL)
404	fCharging = true;
405	gotBatteryState = true;
406	}
407	if (strstr(buff2, "capacity state:") != NULL)
408	{
409	if (strstr(buff2 + 15, "critical") != NULL)
410	fCritical = true;
411	gotCapacityState = true;
412	}
413	if (strstr(buff2, "present rate:") != NULL)
414	{
415	if (sscanf(buff2 + 13, "%d", &presentRate) <= 0)
416	presentRate = 0;
417	gotPresentRate = true;
418	}
419	}
420	}
421
422	if (presentRate)
423	{
424	if (fDischarging)
425	presentRateTotal -= presentRate;
426	else
427	presentRateTotal += presentRate;
428	}
429
430	if (statusFile)
431	fclose(statusFile);
432	if (infoFile)
433	fclose(infoFile);
434
435	}
436	closedir(dfd);
437	}
438
439	*pfPresent = fBatteryPresent;
440
441	/* charging/discharging bits are mutual exclusive */
442	uint32_t uBs = PDM_ACPI_BAT_STATE_CHARGED;
443	if (fDischarging)
444	uBs = PDM_ACPI_BAT_STATE_DISCHARGING;
445	else if (fCharging)
446	uBs = PDM_ACPI_BAT_STATE_CHARGING;
447	if (fCritical)
448	uBs \|= PDM_ACPI_BAT_STATE_CRITICAL;
449	*penmBatteryState = (PDMACPIBATSTATE)uBs;
450
451	if (presentRateTotal < 0)
452	presentRateTotal = -presentRateTotal;
453
454	if (maxCapacityTotal > 0 && currentCapacityTotal > 0)
455	{
456	/* calculate the percentage */
457	*penmRemainingCapacity = (PDMACPIBATCAPACITY)(((float)currentCapacityTotal / (float)maxCapacityTotal)
458	* PDM_ACPI_BAT_CAPACITY_MAX);
459	pu32PresentRate = (uint32_t)(((float)presentRateTotal / (float)maxCapacityTotal) 1000);
460	}
461	#elif defined(RT_OS_DARWIN)
462	CFTypeRef pBlob = IOPSCopyPowerSourcesInfo();
463	CFArrayRef pSources = IOPSCopyPowerSourcesList(pBlob);
464
465	CFDictionaryRef pSource = NULL;
466	const void *psValue;
467	bool result;
468
469	if (CFArrayGetCount(pSources) > 0)
470	{
471	for(int i = 0; i < CFArrayGetCount(pSources); ++i)
472	{
473	pSource = IOPSGetPowerSourceDescription(pBlob, CFArrayGetValueAtIndex(pSources, i));
474	/* If the source is empty skip over to the next one. */
475	if(!pSource)
476	continue;
477	/* Skip all power sources which are currently not present like a
478	* second battery. */
479	if (CFDictionaryGetValue(pSource, CFSTR(kIOPSIsPresentKey)) == kCFBooleanFalse)
480	continue;
481	/* Only internal power types are of interest. */
482	result = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSTransportTypeKey), &psValue);
483	if (result &&
484	CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSInternalType), 0) == kCFCompareEqualTo)
485	{
486	PDMACPIPOWERSOURCE powerSource = PDM_ACPI_POWER_SOURCE_UNKNOWN;
487	/* First check which power source we are connect on. */
488	result = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSPowerSourceStateKey), &psValue);
489	if (result &&
490	CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSACPowerValue), 0) == kCFCompareEqualTo)
491	powerSource = PDM_ACPI_POWER_SOURCE_OUTLET;
492	else if (result &&
493	CFStringCompare((CFStringRef)psValue, CFSTR(kIOPSBatteryPowerValue), 0) == kCFCompareEqualTo)
494	powerSource = PDM_ACPI_POWER_SOURCE_BATTERY;
495
496	/* At this point the power source is present. */
497	*pfPresent = true;
498	*penmBatteryState = PDM_ACPI_BAT_STATE_CHARGED;
499
500	int curCapacity = 0;
501	int maxCapacity = 1;
502	float remCapacity = 0.0f;
503
504	/* Fetch the current capacity value of the power source */
505	result = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSCurrentCapacityKey), &psValue);
506	if (result)
507	CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &curCapacity);
508	/* Fetch the maximum capacity value of the power source */
509	result = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSMaxCapacityKey), &psValue);
510	if (result)
511	CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &maxCapacity);
512
513	/* Calculate the remaining capacity in percent */
514	remCapacity = ((float)curCapacity/(float)maxCapacity * PDM_ACPI_BAT_CAPACITY_MAX);
515	*penmRemainingCapacity = (PDMACPIBATCAPACITY)remCapacity;
516
517	if (powerSource == PDM_ACPI_POWER_SOURCE_BATTERY)
518	{
519	/* If we are on battery power we are discharging in every
520	* case */
521	*penmBatteryState = PDM_ACPI_BAT_STATE_DISCHARGING;
522	int timeToEmpty = -1;
523	/* Get the time till the battery source will be empty */
524	result = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSTimeToEmptyKey), &psValue);
525	if (result)
526	CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &timeToEmpty);
527	if (timeToEmpty != -1)
528	/* 0...1000 */
529	pu32PresentRate = (uint32_t)roundf((remCapacity / ((float)timeToEmpty/60.0)) 10.0);
530	}
531
532	if (powerSource == PDM_ACPI_POWER_SOURCE_OUTLET &&
533	CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSIsChargingKey), &psValue))
534	{
535	/* We are running on an AC power source, but we also have a
536	* battery power source present. */
537	if (CFBooleanGetValue((CFBooleanRef)psValue) > 0)
538	{
539	/* This means charging. */
540	*penmBatteryState = PDM_ACPI_BAT_STATE_CHARGING;
541	int timeToFull = -1;
542	/* Get the time till the battery source will be charged */
543	result = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSTimeToFullChargeKey), &psValue);
544	if (result)
545	CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &timeToFull);
546	if (timeToFull != -1)
547	/* 0...1000 */
548	pu32PresentRate = (uint32_t)roundf((100.0-(float)remCapacity) / ((float)timeToFull/60.0)) 10.0;
549	}
550	}
551
552	/* Check for critical */
553	int criticalValue = 20;
554	result = CFDictionaryGetValueIfPresent(pSource, CFSTR(kIOPSDeadWarnLevelKey), &psValue);
555	if (result)
556	CFNumberGetValue((CFNumberRef)psValue, kCFNumberSInt32Type, &criticalValue);
557	if (remCapacity < criticalValue)
558	penmBatteryState = (PDMACPIBATSTATE)(penmBatteryState \| PDM_ACPI_BAT_STATE_CRITICAL);
559	}
560	}
561	}
562	CFRelease(pBlob);
563	CFRelease(pSources);
564	#endif /* RT_OS_DARWIN */
565	return VINF_SUCCESS;
566	}
567
568	/**
569	* Destruct a driver instance.
570	*
571	* Most VM resources are freed by the VM. This callback is provided so that any non-VM
572	* resources can be freed correctly.
573	*
574	* @param pDrvIns The driver instance data.
575	*/
576	static DECLCALLBACK(void) drvACPIDestruct(PPDMDRVINS pDrvIns)
577	{
578	LogFlow(("drvACPIDestruct\n"));
579	}
580
581	/**
582	* Construct an ACPI driver instance.
583	*
584	* @returns VBox status.
585	* @param pDrvIns The driver instance data.
586	* If the registration structure is needed, pDrvIns->pDrvReg points to it.
587	* @param pCfgHandle Configuration node handle for the driver. Use this to obtain the configuration
588	* of the driver instance. It's also found in pDrvIns->pCfgHandle, but like
589	* iInstance it's expected to be used a bit in this function.
590	*/
591	static DECLCALLBACK(int) drvACPIConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfgHandle)
592	{
593	PDRVACPI pThis = PDMINS_2_DATA(pDrvIns, PDRVACPI);
594
595	/*
596	* Init the static parts.
597	*/
598	pThis->pDrvIns = pDrvIns;
599	/* IBase */
600	pDrvIns->IBase.pfnQueryInterface = drvACPIQueryInterface;
601	/* IACPIConnector */
602	pThis->IACPIConnector.pfnQueryPowerSource = drvACPIQueryPowerSource;
603	pThis->IACPIConnector.pfnQueryBatteryStatus = drvACPIQueryBatteryStatus;
604
605	/*
606	* Validate the config.
607	*/
608	if (!CFGMR3AreValuesValid(pCfgHandle, "\0"))
609	return VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES;
610
611	/*
612	* Check that no-one is attached to us.
613	*/
614	int rc = pDrvIns->pDrvHlp->pfnAttach(pDrvIns, NULL);
615	if (rc != VERR_PDM_NO_ATTACHED_DRIVER)
616	{
617	AssertMsgFailed(("Configuration error: Cannot attach drivers to the ACPI driver!\n"));
618	return VERR_PDM_DRVINS_NO_ATTACH;
619	}
620
621	/*
622	* Query the ACPI port interface.
623	*/
624	pThis->pPort = (PPDMIACPIPORT)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase,
625	PDMINTERFACE_ACPI_PORT);
626	if (!pThis->pPort)
627	{
628	AssertMsgFailed(("Configuration error: "
629	"the above device/driver didn't export the ACPI port interface!\n"));
630	return VERR_PDM_MISSING_INTERFACE_ABOVE;
631	}
632
633	return VINF_SUCCESS;
634	}
635
636
637	/**
638	* ACPI driver registration record.
639	*/
640	const PDMDRVREG g_DrvACPI =
641	{
642	/* u32Version */
643	PDM_DRVREG_VERSION,
644	/* szDriverName */
645	"ACPIHost",
646	/* pszDescription */
647	"ACPI Host Driver",
648	/* fFlags */
649	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
650	/* fClass. */
651	PDM_DRVREG_CLASS_ACPI,
652	/* cMaxInstances */
653	~0,
654	/* cbInstance */
655	sizeof(DRVACPI),
656	/* pfnConstruct */
657	drvACPIConstruct,
658	/* pfnDestruct */
659	drvACPIDestruct,
660	/* pfnIOCtl */
661	NULL,
662	/* pfnPowerOn */
663	NULL,
664	/* pfnReset */
665	NULL,
666	/* pfnSuspend */
667	NULL,
668	/* pfnResume */
669	NULL,
670	/* pfnDetach */
671	NULL,
672	/* pfnPowerOff */
673	NULL
674	};
675

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source: vbox/trunk/src/VBox/Devices/PC/DrvACPI.cpp@ 15682

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